Apple OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. With the new Messages app you can send text, photos, videos, contacts, Web links, and documents to anyone using another Mac, iPhone, iPad, or iPod touch -- you can even start a conversation on one device and continue it on another. The new Share button makes it easy to share files, Web pages, photos, and videos, as well as tweet right from the app you are using. With the Reminders app you can create to-do lists and alerts more...

What's New

Version 10.8.5:

Fixes an issue that may prevent Mail from displaying messages

Improves AFP file transfer performance over 802.11ac Wi-Fi

Resolves an issue that may prevent a screen saver from starting automatically

Ratings

Details

Apple OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. With the new Messages app you can send text, photos, videos, contacts, Web links, and documents to anyone using another Mac, iPhone, iPad, or iPod touch -- you can even start a conversation on one device and continue it on another. The new Share button makes it easy to share files, Web pages, photos, and videos, as well as tweet right from the app you are using. With the Reminders app you can create to-do lists and alerts that appear in the new Notification Center. With Notes you can write down all your ideas and even speak your words with voice dictation. Play head to head games on your Mac with friends on their Macs or iOS devices with Game Center. And with iCloud built in, it's simple to keep all your mail, contacts, calendars, reminders, notes, to do lists, music, photos, iWork files, PDFs, and more up to date across all your devices.

Messages

Send messages from your Mac to friends with an iPhone, iPad, or Mac.

With iMessage, you can start a conversation on your Mac and pick it up on your iPhone or iPad.

Documents in the Cloud lets you create and edit your documents on your Mac, iPhone, and iPad.

The new Reminders app makes managing tasks easy. Jot down your thoughts with the new Notes app. And iCloud keeps your Reminders and Notes up to date across all your devices.

Safari

Type both searches and Web addresses in the new Smart Search Field.

Pinch to see tabs with Tab View and swipe to switch between them.

iCloud Tabs makes the last websites you looked at accessible on your iPhone, iPad, and Mac.*

Notification Center

New notifications appear in the top right corner of your screen.

Open Notification Center from anywhere in OS X to see recent notifications.

Configure your notifications to receive just the ones you want.

Sharing

Share links, photos, videos, and other files right from the app you're in.

Share with Mail, Messages, and AirDrop.

Sign in to Twitter, Flickr, and Vimeo once to start sharing.

Tweet right from your apps with the Tweet sheet.

Game Center

Play live multiplayer and turn-based games against friends on iPhone, iPad, iPod touch, or Mac.

Log in to the Game Center app to see friends in your gaming network.

Check out leaderboards and achievements.

See what games your friends play and track your progress against them.

Other great Mountain Lion features

Dictation lets you talk anywhere you can type--no setup or training required.

AirPlay Mirroring shows your Mac screen on your HDTV with Apple TV.

Power Nap keeps your Mac up to date while it sleeps so it's instantly ready to go.

Gatekeeper makes it safer to download apps from the Internet by giving you control over which apps can be installed on your Mac.

New features for Chinese users include improved text input, leading search engine Baidu as an option in Safari, sharing to microblogging service Sina Weibo and video websites Youku and Tudou, eight new fonts, and a new Chinese dictionary.

Version 10.8.5:

Fixes an issue that may prevent Mail from displaying messages

Improves AFP file transfer performance over 802.11ac Wi-Fi

Resolves an issue that may prevent a screen saver from starting automatically

Improves Xsan reliability

Improves reliability when transferring large files over Ethernet

Improves performance when authenticating to an Open Directory server

Addresses an issue that prevented a smart card from unlocking preference panes in System Preferences

Contains the improvements included in MacBook Air (Mid 2013) Software Update 1.0

Very smooth update.

Mountain Lion has been very fast and stable on my machine. The only exception—and this seems to only be related to my user login, and not others on this mac—is a very long wait after the desktop loads, before I can do anything. Several minutes at least. But since I unusually put it to sleep, that hasn't been a big issue.

I'm guessing this is the last update until 10.9 Mavricks. It's been a fine ride so far. :)